1. (Noun) A military serviceman that is fresh out of boot camp (recruit training) or MOS school. Usually gets hazed and is treated like a n korean in a prison camp. They can never think for themselves, and must pay respect to their seniors at all times

2. (Noun) A military serviceman who has not yet deployed; also one who has not gone to Iraq or Afghanistan (MEUs reduce status to half boot)

3. (Adj.) Something that is meant for boots or that would make you seem like one (yo master sergeants high fade is boot as fuck; those usmc car stickers are boot as fuck)

(Boot Davila passed by Corporal Herrera without giving a proper greeting like Good Morning)

Herrera: Hey boot I know you give me a proper greeting when you see me!

The boys yelled "Boot, sister!" at the girl when she entered their clubhouse. Elliot Ness's Untouchables confiscated 5,000 cases of Canadian boot during a raid. This new software requires the machine be booted over again so as to install properly.